Lubricating gun



13 truding betwee'nthe nozzle and the'nipple;

Patented: i I

, mns'xnnm'nn, or wlnsnannn, GERMANY;

v Lu'BnIoar lpplication nled August"25, 1936, Serial n This invention relates to lubricating guns of the type whereinthe, connection between- -the gun and the nipple to be, lubricatedis ]formed by merely pressing 'thenoz'zle'of the gun into contact with-the nipple, while op-'- crating-the gun to forceithe lubricant into thenip'le- Andbject of the invention is to provide; a nozzle which will effectively engage the" nipple evenwhen the axis of the gun-is not al ned with the axis of the nipip'lle. 7 i

'In guns of this type itis own to use washers or gaskets of liable rhateriahsuch as leather, to prevent t e lubricant from ex The disadvantage of such a structure lies in t .the' fact I that the gasket quickly becomes 4 worn and allows leakage of the lubricant. Thi's is particularly true where the lubricant me sun. 5

o. 131,:3as, and in Germany ma 13, 1925.

Iai is the grease gun itself, 6 the nozzle a thereof formed'oi any'suitab le material for this purpose, and c the, semi-spherical or domed head of a lubricating nipple (Z against- WlllCllthe nozzle of the grease gun is forced 'or pressed as tightly: as possible when using the greae'gun. In the top of the head the-lubricating nipple is provided a passage 6 for the" lubricant, for example grease or the like, The passage 1 for the lubricant in the nozzle 6' leads 'to a frusto-conical enlargelike and which is secured-to the nozzle in ment g over whichfextends adiaphragm h} of thin metal for example sheet steelor the f "10 any suitable manner. The diaphragm h, as

shown in Figure 1, may lie flatlyover the- 7 outlet opening of the nozzle, or, as shown in Figure 2 may be of frusto-conical'shape and drawn into the enlargement of the nozzle.

is It is provided with an opening of whichthe' angular so tion to t between the nip 1e and the nozzle of. the

diaphragm extending over I an aperture atthe m ddle. The head of the In the accompanying-drawing are illus section. v

is forced into the bearing under. high pres- I i The'pre's nt invention aims to overcome the, foregoing and other. disadvantages by; providing means whereb the nozzle may en'- zs gage the nipple in liqui -tight relation, and

also by eliminating thenecessity for frequent renewalofp'arts.-

- In order tofobtain an efficient joint in any osition of the grease gun in relalie head. of the lubricating nipple grease. gun the atter'is providedwith an-* enlarged outlet f'passage'and a ;th1l'1 metal this 'and having lubricating. nipple which asses into the v aperture'of the diaphragm 1s preferably: of v i conical or semi-spherical shape. Its .diameter is larger thanthatof the aperture .in

40 the diaphragm so that the flexible metal diaphragm cannot be 'assed completely over the lubricating nipp e, but can bear-thereon.

in all angular positi'onsof the nozzle of the grease gun an'd forman edge contact.

trated two examples of construction in accordance with the invention in longitudinal Fi re 1 shows grease gun the non e of whiohis provldedwith a. frustofl conical enlarged outlet-'openlng-over whlch.

extend a flat diaphragm,- applied to alubrieating nipple, and i g i Figure 2 shows thehozzle of'a. grease gun having a frusto-conical diaphragm also hearing upon the head of a, lubricating nipple.

having a- {rece diameter is smaller than that of the head of the. lubricating nipple so that this can only in the diapass partly through the openingphragm." When the nozzle 0 the gun is pressed against the head of the lubricating nipple it yieldssomewhat and the metal of the diaphragm bears on the nippleso as to form a resilient dirt-cutting edge, that is, an;

,edge which will out 1 through any dirt or grease which may be adhering to the surface of thenipple. It alsoenables the grease gun to be held in an angularposition in. relation to the nipple. 'The opening 6 in the lubricatingnipple and the outlet opening in the nozzle ofthe' grease gun need therefore not be arranged axially in relation to one another. The contact between the nozzle of the p grease gun and the head of-the lubricating nipple is thus a purely inetalone and it remains always efiectiva as the edge of the aperture conforms in all positions to the head of the lubricating nipple. 4 i

Having thus described my invent-ion, what iIIclaim as new and desire to secure by Letters Patent'is 1., In adevice of the class described, a noz' zle having a recess at its end and havinga 1 i passage for conducting lubricant to said rec'ess, and a; resilient metallic'diaphragm extending oversaid recess, said diaphr beingprovided with- :ma erture adapted'to' I receive a .lubricating nipp e. l

2. In a lubricatingggun, a metallic nozzle at "tsend'and having an innting'ai resilient dirtturned; port cutting edge 'adj acents aid and adaptedv i to engage vthe outer surface of? lubricating nipple. v I

- 3. in a device of the class described, a; nozzle having arece'ss at its end, and having a passage for conducting lubricant ,te said recess, a resilient metallic frnsto-oonical 'inemberextendingf ''over said recess, said member being provided with sin-aperture, the metal of said member adjacent said aperture forming a cutting edge adapted to engage a lubricating nipple. g

4-. in a device of the class describei'a noz- With-'a' circular aperture,the metal of Said diaphragm adjacent said aperture forming an edgeadapted to-en'gage the head of'a i lubricating nipple.

In testimony whereof I afiired myfsigna ture.

" HANS KREIJIDEL. 

